Review of geographical stocks of tropical dolphins (Stenella spp. and Delphinus delphis) in the eastern Pacific

Perrin, William F. and Scott, Michael D. and Walker, G. Jay and Cass, Virginia L. (1985) Review of geographical stocks of tropical dolphins (Stenella spp. and Delphinus delphis) in the eastern Pacific. NOAA/National Marine Fisheries Service, (NOAA Technical Report NMFS, 28)

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Abstract

Information on geographical variation is reviewed for Stenella attenuata, S. longirostris, S. coeruleoalba, and Delphinus delphis in the eastern tropical Pacific, and boundaries for potential management units are proposed. National Marine Fisheries Service and Inter-American Tropical Tuna Commission sighting records made from 1979 to 1983 which were outside boundaries used in a 1979 assessment were examined for validity. Tagging returns and morphological data were also analyzed. Several stock ranges are expanded or combined. Three management units are proposed for S. attenuata: the coastal, northern offshore, and southern offshore spoiled dolphins. Four management units are proposed for S. longirostris: the Costa Rican, eastern, northern whitebelly, and southern whitebelly spinner dolphins. Two provisional management units are proposed for S. coeruleoalba: the northern and southern striped dolphins. Five management units (two of which are provisional) are proposed for D. delphis: the Baja neritic, northern, central, southern, and Guerrero common dolphins. Division into management units was based on morphological stock differences and distributional breaks. (PDF file contains 34 pages.)

Item Type: Monograph or Serial Issue
Title: Review of geographical stocks of tropical dolphins (Stenella spp. and Delphinus delphis) in the eastern Pacific
Personal Creator/Author:
CreatorsEmail
Perrin, William F.
Scott, Michael D.
Walker, G. Jay
Cass, Virginia L.
Series Name: NOAA Technical Report NMFS
Number: 28
Date: 1985
Publisher: NOAA/National Marine Fisheries Service
Issuing Agency: United States National Marine Fisheries Service
Subjects: Ecology
Fisheries
Biology
Item ID: 2795
Depositing User: Patti M. Marraro
Date Deposited: 11 Nov 2009 13:07
Last Modified: 29 Sep 2011 18:20
URI: http://aquaticcommons.org/id/eprint/2795

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